75-year-old Gennai Yanagisawa, create one-man aircraft (GEN H-4). Maximum altitude of the GEN H-4 can is 1000 meters at a top speed of 90 km/hr (59 mph) for up to 30 minutes. It is weight 75kg (165-pound). Controlling the GEN H-4 is very easy. Its an amazing gadget for people to travel in air.